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(CNN) —  

It’s been nearly a week since construction of a massive telescope atop Hawaii’s Mauna Kea was scheduled to begin.

But throngs of protesters – or protectors, as they prefer to be called – have joined together to block construction of the Thirty Meter Telescope.

Kaho’okahi Kanuha, a leader of the group, told CNN on Sunday that organizers believe more than 2,000 people have assembled at the Mauna Kea access road, where they’ve built a makeshift camp and blockade in hopes of preventing construction from getting underway.

Dan Dennison, spokesman for the Hawaii Department of Land and Natural Resources, said in a Monday night press conference the number of people has dwindled down to 1,000.

It’s a conflict years in the making. Scientists see Mauna Kea as a prime location for peering into the deep reaches of space. But for some native Hawaiians, the dormant volcano, the highest peak in Hawaii, is sacred ground.

The barren landscape is rich with their history, and is believed to be the site of the genesis of the Hawaiian people. Many of their revered ancestors are buried there.

“It is without a doubt one of our most sacred places in all of Hawaii,” Kanuha told CNN, saying it was home to sacred waters and native Hawaiian deities.

Demonstrators gather to block a road at the base of Hawaii's tallest mountain, Monday, July 15, 2019, in Mauna Kea, Hawaii.
PHOTO: Caleb Jones/AP
Demonstrators gather to block a road at the base of Hawaii's tallest mountain, Monday, July 15, 2019, in Mauna Kea, Hawaii.

Mauna Kea is also considered “ceded land,” which means it’s to be held in a trust to benefit future generations of native Hawaiians.

And so the protectors have gathered there, Kanuha told CNN.

He pointed out that the mauna, or mountain, has already been “desecrated” 13 times by other observatories, and “many of them have been the so-called last telescope,” he said. Now, enough is enough.

“We are taking a stand not only to protect our mauna and aina, our land, who we have a genealogical connection to,” Kanuha said. “We are fighting to protect it because we know if we cannot stop this, there is not very much we can fight for or protect.”

“This is our last stand,” he said.

Scott Ishikawa, spokesperson for the Thirty Meter Telescope project, said in a statement to CNN Sunday that “people on both sides of the issue are hurting,” but Mauna Kea continues to be the preferred location for the project.

“We recognize that people have expressed strong emotions about that, and we regret that. We’ve been part of the Hawaii Island community for over 10 years, and we have tried to do the right thing, with consideration for the environment, the culture, the economy and the future of Hawaii Island,” the statement read. “But we know that TMT has become a symbol for larger issues within the native Hawaiian community. While we haven’t been privy to the State’s security or enforcement plans, like everyone else in Hawaii, we want to find a way forward that is safe for everybody.”

In a statement earlier this month, Henry Yang, chair of the Thirty Meter Telescope International Observatory board and chancellor of the University of California Santa Barbara, said the group is “committed to being good stewards on the mountain and inclusive of the Hawaiian community.”

“We are deeply committed to integrating science and culture on Maunakea and in Hawai’i,” Yang said, “and to enriching educational opportunities and the local economy.”

One of a number of telescopes already in use at Hawaii's Mauna Kea.
PHOTO: Caleb Jones/AP
One of a number of telescopes already in use at Hawaii's Mauna Kea.

Growing tension

Gov. David Ige last week signed an emergency proclamation to give law enforcement increased authority to manage the situation.

Police on Wednesday arrested 33 protesters, Dennison said. They were elders in the community who had chosen to be arrested and formed a line to block the road.

They were released almost immediately, Dennison said. They were given the option to get a citation and leave the area.

The past several days have seen Hawaii’s governor and protesters at odds over the conditions at the camp.

Gov. Ige on Friday told reporters he would not call in additional troops from the National Guard and had never considered using tear gas to disperse the crowds. He said his “number one priority has been and continues to be the safety of all people.”

“However, there are thousands of people on the mountain, and I encourage all to remain respectful and calm,” he added.

Ige painted an image of a disorganized camp, where there were “inadequate bathroom and rubbish facilities” and reports of drug and alcohol use.

But demonstrators at the blockade on Saturday vehemently disagreed with his characterization. CNN affiliate KHON reported there was an orientation tent that outlined rules for protesters and a medical tent stocked with sunscreen and medical supplies. A full-time kitchen crew is on hand to prepare meals and snacks – all for free, according to one organizer.

Protesters continue their opposition vigil against the construction of the Thirty Meter Telescope at Mauna Kea on the Big Island of Hawaii Friday, July 19, 2019.
PHOTO: Bruce Asato/AP
Protesters continue their opposition vigil against the construction of the Thirty Meter Telescope at Mauna Kea on the Big Island of Hawaii Friday, July 19, 2019.

Port-a-potties were at the camp and were cleaned twice daily, trash was changed out several times a day, and there was even recycling, organizers told KHON.

“There are absolutely no signs of drugs or alcohol,” Honolulu City Councilwoman Heidi Tsuneyoshi told the station. “No one is even allowed to smoke here.”

Dennison said Monday that authorities did observe the presence of beer and marijuana smoking, which became the basis of Ige’s statement. Protesters told officers they patrolled the area and asked the violators to leave.

CNN’s Ryan Prior and Chris Boyette contributed to this report.